package com.atguigu.srb.oss.service.impl;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.CannedAccessControlList;
import com.atguigu.srb.oss.service.FileService;
import com.atguigu.srb.oss.util.OssProperties;
import lombok.extern.slf4j.Slf4j;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;

import java.io.InputStream;
import java.util.UUID;

@Service
@Slf4j
public class FileServiceImpl implements FileService {

    @Override
    public String upload(InputStream inputStream, String module, String fileName) {

        //创建ossclient实例
        OSS ossClient = new OSSClientBuilder().build(
                OssProperties.ENDPOINT,
                OssProperties.KEY_ID,
                OssProperties.KEY_SECRET);

        //判断oso实例是否存在，如果不存在则创建，如果存在则获取
        if (!ossClient.doesBucketExist(OssProperties.BUCKET_NAME)) {
            //创建bucket
            ossClient.createBucket(OssProperties.BUCKET_NAME);
            //设置实例的访问权限
            ossClient.setBucketAcl(OssProperties.BUCKET_NAME, CannedAccessControlList.PublicRead);

        }

        //构建日期路径
        String folder = new DateTime().toString("yyyy/MM/dd");

        //文件名：uuid.扩展名
        fileName = UUID.randomUUID().toString() + fileName.substring(fileName.lastIndexOf("."));

        //文件根路径
        String key = module + "/" + folder + "/" + fileName;

        //文件上传阿里云
        ossClient.putObject(OssProperties.BUCKET_NAME, key, inputStream);

        //关闭ossclient
        ossClient.shutdown();

        //阿里云文件绝对路径
        return "https://" + OssProperties.BUCKET_NAME + "." + OssProperties.ENDPOINT
                + "/" + key;
    }

    @Override
    public void removeFile(String url) {

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(
                OssProperties.ENDPOINT,
                OssProperties.KEY_ID,
                OssProperties.KEY_SECRET);

        //文件名（服务器上的文件路径）
        String host = "https://" + OssProperties.BUCKET_NAME + "." + OssProperties.ENDPOINT + "/";
        String objectName = url.substring(host.length());

        // 删除文件。
        ossClient.deleteObject(OssProperties.BUCKET_NAME, objectName);

        // 关闭OSSClient。
        ossClient.shutdown();

    }
}
